Tue PsELAPHID2 OF NorTH AMERICA. 233 
wide as the head and eyes, divided by a sharp cut running 
backward to the inter-ocular line. Immediately behind the 
tubercles the head is constricted to less than two-thirds of the 
width of the frontal margin, and thence the sides diverge to 
the eyes. Between the eyes are two large pubescent fovee, 
and on the occiput at the base a small obsolete tubercle. Av- 
tenne moniliform, except the first joint, which is cylindrical, 
nearly twice as long as thick. The second and third are 
longer than wide, joints four to eight shorter, equal in length, 
subequal in thickness, the fourth very slightly transverse; the 
ninth and tenth are very little larger, equal, globular; eleventh 
slightly longer than thick. Protherax uniformly convex, 
slightly transverse, widest one-third of the length from the 
base, which is nearly twice as wide as the neck and as wide 
as the length, or four-fifths the greatest width. One-sixth 
from the base are three sharply impressed fovez, the lateral 
ones partly hidden from above. /ytra across the shoulders 
broader than the prothorax, and nearly as wide as the suture 
is long. The humeral width is about two-thirds that of the 
tip. The sides are divergent from the shoulders and nearly 
straight, disk not, or very little convex; lines entire, deeply 
impressed, suture depressed, humeri forming a prominent 
ridge. Abdomen rather convex, broadly margined, edge of 
margin curved, segments uniformly vaulted from side to side; 
first dorsal shorter than the second, ventrals subequal, dimin- 
ishing slightly in length. Legs long and slender, femora 
cylindrical, tibia thicker toward the end, or, in the male, the 
intermediate ones slightly bent inward at the lower third, and 
the posterior very much dilated, tapering at the distal third to 
the compressed tarsus. 
‘Habitat. Mountains of Virginia and Tennessee. 
Cu. (?) FORMICARIUM, Casey. (Lzotus formicarius, Cas.) 
Cinnamon red, faintly punctulate, polished, prothorax trans- 
verse, wider than long. Length 2.8mm. Plate VI, Fig. 14. 
